Eliminating egg eating snakes (may seem graphic to some)

First off is that I don't want to upset anyone that is against eliminating snakes. I know they have a purpose and a use and I have heard all the arguments as to why we should not kill them.
This post is not to raise another heated debate about killing snakes.
That said, my dad has come up with a way to catch snakes that invade chicken nests looking for eggs.
I just spent four days there visiting and during that time he caught five black rat snakes all over five feet long and two of those were over six feet long. Everyone was caught in a nest eating eggs.
All of the snakes he caught were killed.
If there is enough interest I will tell how he caught them by posting here.
Again it is not my interest to start a debate over the killing of snakes but if anyone wants me to share a way to stop snakes from eating eggs and chicks please let me know.

I am interested in how he did it. I respect all living creatures, but I always have to protect my own. I just killed a 5' black snake last week with a 12 gauge, he was trying to get in the chicken pen at night.

Since they are edible you may want to try cooking one so they are not a complete loss. My wife will remove the skin boil the snake and remove the meat then make a soup, they are consider a delicacy in some parts of the world.